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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * the License.  You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * </em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> * </em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em>
<a name="17" href="#17">17</a>  
<a name="18" href="#18">18</a>  <strong class="jxr_keyword">package</strong> org.apache.log4j;
<a name="19" href="#19">19</a>  
<a name="20" href="#20">20</a>  
<a name="21" href="#21">21</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Level;
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> org.apache.log4j.Logger;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> java.util.Random;
<a name="24" href="#24">24</a>  
<a name="25" href="#25">25</a>  <em class="jxr_comment">/*</em>
<a name="26" href="#26">26</a>  <em class="jxr_comment">  Stress test the Logger class.</em>
<a name="27" href="#27">27</a>  
<a name="28" href="#28">28</a>  <em class="jxr_comment">*/</em>
<a name="29" href="#29">29</a>  
<a name="30" href="#30">30</a>  <strong class="jxr_keyword">class</strong> <a href="../../../org/apache/log4j/StressCategory.html">StressCategory</a> {
<a name="31" href="#31">31</a>  
<a name="32" href="#32">32</a>    <strong class="jxr_keyword">static</strong> Level[] level = <strong class="jxr_keyword">new</strong> Level[] {Level.DEBUG, 
<a name="33" href="#33">33</a>  				      Level.INFO, 
<a name="34" href="#34">34</a>  				      Level.WARN,
<a name="35" href="#35">35</a>  				      Level.ERROR,
<a name="36" href="#36">36</a>  				      Level.FATAL};
<a name="37" href="#37">37</a>  
<a name="38" href="#38">38</a>    <strong class="jxr_keyword">static</strong> Level defaultLevel = Logger.getRootLogger().getLevel();
<a name="39" href="#39">39</a>    
<a name="40" href="#40">40</a>    <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">int</strong> LENGTH;
<a name="41" href="#41">41</a>    <strong class="jxr_keyword">static</strong> String[] names;
<a name="42" href="#42">42</a>    <strong class="jxr_keyword">static</strong> Logger[] cat;
<a name="43" href="#43">43</a>    <strong class="jxr_keyword">static</strong> <a href="../../../org/apache/log4j/StressCategory.html">CT</a>[] ct;
<a name="44" href="#44">44</a>  
<a name="45" href="#45">45</a>    <strong class="jxr_keyword">static</strong> Random random = <strong class="jxr_keyword">new</strong> Random(10);
<a name="46" href="#46">46</a>  
<a name="47" href="#47">47</a>    <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> main(String[] args) {
<a name="48" href="#48">48</a>      
<a name="49" href="#49">49</a>      LENGTH = args.length;
<a name="50" href="#50">50</a>  
<a name="51" href="#51">51</a>      <strong class="jxr_keyword">if</strong>(LENGTH == 0) {
<a name="52" href="#52">52</a>        System.err.println( <span class="jxr_string">"Usage: java "</span> + StressCategory.<strong class="jxr_keyword">class</strong>.getName() +
<a name="53" href="#53">53</a>  			  <span class="jxr_string">" name1 ... nameN\n."</span>);      
<a name="54" href="#54">54</a>        System.exit(1);
<a name="55" href="#55">55</a>      }
<a name="56" href="#56">56</a>      <strong class="jxr_keyword">if</strong>(LENGTH &gt;= 7) {
<a name="57" href="#57">57</a>        System.err.println(
<a name="58" href="#58">58</a>          <span class="jxr_string">"This stress test suffers from combinatorial explosion.\n"</span>+
<a name="59" href="#59">59</a>          <span class="jxr_string">"Invoking with seven arguments takes about 90 minutes even on fast machines"</span>);
<a name="60" href="#60">60</a>      }
<a name="61" href="#61">61</a>  
<a name="62" href="#62">62</a>      names = <strong class="jxr_keyword">new</strong> String[LENGTH];
<a name="63" href="#63">63</a>      <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i=0; i &lt; LENGTH; i++) {
<a name="64" href="#64">64</a>        names[i] = args[i];
<a name="65" href="#65">65</a>      }    
<a name="66" href="#66">66</a>      cat = <strong class="jxr_keyword">new</strong> Logger[LENGTH];
<a name="67" href="#67">67</a>      ct = <strong class="jxr_keyword">new</strong> <a href="../../../org/apache/log4j/StressCategory.html">CT</a>[LENGTH]; 
<a name="68" href="#68">68</a>  
<a name="69" href="#69">69</a>  
<a name="70" href="#70">70</a>      permute(0); 
<a name="71" href="#71">71</a>  
<a name="72" href="#72">72</a>      <em class="jxr_comment">// If did not exit, then passed all tests.</em>
<a name="73" href="#73">73</a>    }
<a name="74" href="#74">74</a>  
<a name="75" href="#75">75</a>    <em class="jxr_comment">// Loop through all permutations of names[].</em>
<a name="76" href="#76">76</a>    <em class="jxr_comment">// On each possible permutation call createLoop</em>
<a name="77" href="#77">77</a>    <strong class="jxr_keyword">static</strong>
<a name="78" href="#78">78</a>    <strong class="jxr_keyword">void</strong> permute(<strong class="jxr_keyword">int</strong> n) {
<a name="79" href="#79">79</a>      <strong class="jxr_keyword">if</strong>(n == LENGTH)
<a name="80" href="#80">80</a>        createLoop(0);
<a name="81" href="#81">81</a>      <strong class="jxr_keyword">else</strong>
<a name="82" href="#82">82</a>        <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = n; i &lt; LENGTH; i++) {
<a name="83" href="#83">83</a>  	swap(names, n, i);
<a name="84" href="#84">84</a>  	permute(n+1);
<a name="85" href="#85">85</a>  	swap(names, n, i);	
<a name="86" href="#86">86</a>        }
<a name="87" href="#87">87</a>    }
<a name="88" href="#88">88</a>  
<a name="89" href="#89">89</a>    <strong class="jxr_keyword">static</strong>
<a name="90" href="#90">90</a>    <strong class="jxr_keyword">void</strong> swap(String[] names, <strong class="jxr_keyword">int</strong> i, <strong class="jxr_keyword">int</strong> j) {
<a name="91" href="#91">91</a>      String t = names[i];
<a name="92" href="#92">92</a>      names[i] = names[j];
<a name="93" href="#93">93</a>      names[j] = t;
<a name="94" href="#94">94</a>    }
<a name="95" href="#95">95</a>    
<a name="96" href="#96">96</a>    <strong class="jxr_keyword">public</strong>
<a name="97" href="#97">97</a>    <strong class="jxr_keyword">static</strong>
<a name="98" href="#98">98</a>    <strong class="jxr_keyword">void</strong> permutationDump() {
<a name="99" href="#99">99</a>      System.out.print(<span class="jxr_string">"Current permutation is - "</span>);
<a name="100" href="#100">100</a>     <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i &lt; LENGTH; i++) {
<a name="101" href="#101">101</a>       System.out.print(names[i] + <span class="jxr_string">" "</span>);
<a name="102" href="#102">102</a>     }
<a name="103" href="#103">103</a>     System.out.println();
<a name="104" href="#104">104</a>   }
<a name="105" href="#105">105</a> 
<a name="106" href="#106">106</a> 
<a name="107" href="#107">107</a>   <em class="jxr_comment">// Loop through all possible 3^n combinations of not instantiating, </em>
<a name="108" href="#108">108</a>   <em class="jxr_comment">// instantiating and setting/not setting a level.</em>
<a name="109" href="#109">109</a> 
<a name="110" href="#110">110</a>   <strong class="jxr_keyword">static</strong>
<a name="111" href="#111">111</a>   <strong class="jxr_keyword">void</strong> createLoop(<strong class="jxr_keyword">int</strong> n) {
<a name="112" href="#112">112</a>     <strong class="jxr_keyword">if</strong>(n == LENGTH) {  
<a name="113" href="#113">113</a>       <em class="jxr_comment">//System.out.println("..............Creating cat[]...........");</em>
<a name="114" href="#114">114</a>       <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i &lt; LENGTH; i++) {
<a name="115" href="#115">115</a> 	<strong class="jxr_keyword">if</strong>(ct[i] == <strong class="jxr_keyword">null</strong>)
<a name="116" href="#116">116</a> 	  cat[i] = <strong class="jxr_keyword">null</strong>;
<a name="117" href="#117">117</a> 	<strong class="jxr_keyword">else</strong> {
<a name="118" href="#118">118</a> 	  cat[i] = Logger.getLogger(ct[i].catstr);
<a name="119" href="#119">119</a> 	  cat[i].setLevel(ct[i].level);
<a name="120" href="#120">120</a> 	}
<a name="121" href="#121">121</a>       }
<a name="122" href="#122">122</a>       test();
<a name="123" href="#123">123</a>       <em class="jxr_comment">// Clear hash table for next round</em>
<a name="124" href="#124">124</a>       Hierarchy h = (Hierarchy) LogManager.getLoggerRepository();
<a name="125" href="#125">125</a>       h.clear();
<a name="126" href="#126">126</a>     }
<a name="127" href="#127">127</a>     <strong class="jxr_keyword">else</strong> {      
<a name="128" href="#128">128</a>       ct[n]  = <strong class="jxr_keyword">null</strong>;
<a name="129" href="#129">129</a>       createLoop(n+1);  
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>       ct[n]  = <strong class="jxr_keyword">new</strong> CT(names[n], <strong class="jxr_keyword">null</strong>);
<a name="132" href="#132">132</a>       createLoop(n+1);  
<a name="133" href="#133">133</a>       
<a name="134" href="#134">134</a>       <strong class="jxr_keyword">int</strong> r = random.nextInt(); <strong class="jxr_keyword">if</strong>(r &lt; 0) r = -r;
<a name="135" href="#135">135</a>       ct[n]  = <strong class="jxr_keyword">new</strong> CT(names[n], level[r%5]);
<a name="136" href="#136">136</a>       createLoop(n+1);
<a name="137" href="#137">137</a>     }
<a name="138" href="#138">138</a>   }
<a name="139" href="#139">139</a> 
<a name="140" href="#140">140</a> 
<a name="141" href="#141">141</a>   <strong class="jxr_keyword">static</strong>
<a name="142" href="#142">142</a>   <strong class="jxr_keyword">void</strong> test() {    
<a name="143" href="#143">143</a>     <em class="jxr_comment">//System.out.println("++++++++++++TEST called+++++++++++++");</em>
<a name="144" href="#144">144</a>     <em class="jxr_comment">//permutationDump();</em>
<a name="145" href="#145">145</a>     <em class="jxr_comment">//catDump();</em>
<a name="146" href="#146">146</a> 
<a name="147" href="#147">147</a>     <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = 0; i &lt; LENGTH; i++) {
<a name="148" href="#148">148</a>       <strong class="jxr_keyword">if</strong>(!checkCorrectness(i)) {
<a name="149" href="#149">149</a> 	System.out.println(<span class="jxr_string">"Failed stress test."</span>);
<a name="150" href="#150">150</a> 	permutationDump();
<a name="151" href="#151">151</a> 	
<a name="152" href="#152">152</a> 	<em class="jxr_comment">//Hierarchy._default.fullDump();</em>
<a name="153" href="#153">153</a> 	ctDump();
<a name="154" href="#154">154</a> 	catDump();
<a name="155" href="#155">155</a> 	System.exit(1);
<a name="156" href="#156">156</a>       }
<a name="157" href="#157">157</a>     }
<a name="158" href="#158">158</a>   }
<a name="159" href="#159">159</a>   
<a name="160" href="#160">160</a>   <strong class="jxr_keyword">static</strong>
<a name="161" href="#161">161</a>   <strong class="jxr_keyword">void</strong> ctDump() {
<a name="162" href="#162">162</a>     <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> j = 0; j &lt; LENGTH; j++) {
<a name="163" href="#163">163</a>        <strong class="jxr_keyword">if</strong>(ct[j] != <strong class="jxr_keyword">null</strong>) 
<a name="164" href="#164">164</a> 	    System.out.println(<span class="jxr_string">"ct ["</span> + j + <span class="jxr_string">"] = ("</span>+ct[j].catstr+<span class="jxr_string">","</span> + 
<a name="165" href="#165">165</a> 			       ct[j].level + <span class="jxr_string">")"</span>);
<a name="166" href="#166">166</a>        <strong class="jxr_keyword">else</strong> 
<a name="167" href="#167">167</a> 	 System.out.println(<span class="jxr_string">"ct ["</span> + j + <span class="jxr_string">"] = undefined"</span>);
<a name="168" href="#168">168</a>     }
<a name="169" href="#169">169</a>   }
<a name="170" href="#170">170</a>   
<a name="171" href="#171">171</a>   <strong class="jxr_keyword">static</strong>
<a name="172" href="#172">172</a>   <strong class="jxr_keyword">void</strong> catDump() {
<a name="173" href="#173">173</a>     <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> j = 0; j &lt; LENGTH; j++) {
<a name="174" href="#174">174</a>       <strong class="jxr_keyword">if</strong>(cat[j] != <strong class="jxr_keyword">null</strong>)
<a name="175" href="#175">175</a> 	System.out.println(<span class="jxr_string">"cat["</span> + j + <span class="jxr_string">"] = ("</span> + cat[j].name + <span class="jxr_string">","</span> +
<a name="176" href="#176">176</a> 			   cat[j].getLevel() + <span class="jxr_string">")"</span>);
<a name="177" href="#177">177</a>       <strong class="jxr_keyword">else</strong>
<a name="178" href="#178">178</a> 	System.out.println(<span class="jxr_string">"cat["</span> + j + <span class="jxr_string">"] = undefined"</span>); 
<a name="179" href="#179">179</a>     }
<a name="180" href="#180">180</a>   }
<a name="181" href="#181">181</a> 
<a name="182" href="#182">182</a>   <em class="jxr_comment">//  static</em>
<a name="183" href="#183">183</a>   <em class="jxr_comment">//void provisionNodesDump() {</em>
<a name="184" href="#184">184</a>   <em class="jxr_comment">//for (Enumeration e = CategoryFactory.ht.keys(); e.hasMoreElements() ;) {</em>
<a name="185" href="#185">185</a>   <em class="jxr_comment">//  CategoryKey key = (CategoryKey) e.nextElement();</em>
<a name="186" href="#186">186</a>   <em class="jxr_comment">//  Object c = CategoryFactory.ht.get(key);</em>
<a name="187" href="#187">187</a>   <em class="jxr_comment">//  if(c instanceof  ProvisionNode) </em>
<a name="188" href="#188">188</a>   <em class="jxr_comment">//((ProvisionNode) c).dump(key.name);</em>
<a name="189" href="#189">189</a>   <em class="jxr_comment">//}</em>
<a name="190" href="#190">190</a>   <em class="jxr_comment">//}</em>
<a name="191" href="#191">191</a>   
<a name="192" href="#192">192</a>   <strong class="jxr_keyword">static</strong>
<a name="193" href="#193">193</a>   <strong class="jxr_keyword">boolean</strong> checkCorrectness(<strong class="jxr_keyword">int</strong> i) {
<a name="194" href="#194">194</a>     <a href="../../../org/apache/log4j/StressCategory.html">CT</a> localCT = ct[i];
<a name="195" href="#195">195</a> 
<a name="196" href="#196">196</a>     <em class="jxr_comment">// Can't perform test if logger is not instantiated</em>
<a name="197" href="#197">197</a>     <strong class="jxr_keyword">if</strong>(localCT == <strong class="jxr_keyword">null</strong>) 
<a name="198" href="#198">198</a>       <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="199" href="#199">199</a>     
<a name="200" href="#200">200</a>     <em class="jxr_comment">// find expected level</em>
<a name="201" href="#201">201</a>     Level expected = getExpectedPrioriy(localCT);
<a name="202" href="#202">202</a> 
<a name="203" href="#203">203</a> 			    
<a name="204" href="#204">204</a>     Level purported = cat[i].getEffectiveLevel();
<a name="205" href="#205">205</a> 
<a name="206" href="#206">206</a>     <strong class="jxr_keyword">if</strong>(expected != purported) {
<a name="207" href="#207">207</a>       System.out.println(<span class="jxr_string">"Expected level for "</span> + localCT.catstr + <span class="jxr_string">" is "</span> +
<a name="208" href="#208">208</a> 		       expected);
<a name="209" href="#209">209</a>       System.out.println(<span class="jxr_string">"Purported level for "</span>+ cat[i].name + <span class="jxr_string">" is "</span>+purported);
<a name="210" href="#210">210</a>       <strong class="jxr_keyword">return</strong> false;
<a name="211" href="#211">211</a>     }
<a name="212" href="#212">212</a>     <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a name="213" href="#213">213</a>       
<a name="214" href="#214">214</a>   }
<a name="215" href="#215">215</a> 
<a name="216" href="#216">216</a>   <strong class="jxr_keyword">static</strong>
<a name="217" href="#217">217</a>   Level getExpectedPrioriy(<a href="../../../org/apache/log4j/StressCategory.html">CT</a> ctParam) {
<a name="218" href="#218">218</a>     Level level = ctParam.level;
<a name="219" href="#219">219</a>     <strong class="jxr_keyword">if</strong>(level != <strong class="jxr_keyword">null</strong>) 
<a name="220" href="#220">220</a>       <strong class="jxr_keyword">return</strong> level;
<a name="221" href="#221">221</a> 
<a name="222" href="#222">222</a>     
<a name="223" href="#223">223</a>     String catstr = ctParam.catstr;    
<a name="224" href="#224">224</a>     
<a name="225" href="#225">225</a>     <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> i = catstr.lastIndexOf('.', catstr.length()-1); i &gt;= 0; 
<a name="226" href="#226">226</a> 	                              i = catstr.lastIndexOf('.', i-1))  {
<a name="227" href="#227">227</a>       String substr = catstr.substring(0, i);
<a name="228" href="#228">228</a> 
<a name="229" href="#229">229</a>       <em class="jxr_comment">// find the level of ct corresponding to substr</em>
<a name="230" href="#230">230</a>       <strong class="jxr_keyword">for</strong>(<strong class="jxr_keyword">int</strong> j = 0; j &lt; LENGTH; j++) {	
<a name="231" href="#231">231</a> 	<strong class="jxr_keyword">if</strong>(ct[j] != <strong class="jxr_keyword">null</strong> &amp;&amp; substr.equals(ct[j].catstr)) {
<a name="232" href="#232">232</a> 	  Level p = ct[j].level;
<a name="233" href="#233">233</a> 	  <strong class="jxr_keyword">if</strong>(p != <strong class="jxr_keyword">null</strong>) 
<a name="234" href="#234">234</a> 	    <strong class="jxr_keyword">return</strong> p;	  
<a name="235" href="#235">235</a> 	}
<a name="236" href="#236">236</a>       }
<a name="237" href="#237">237</a>     }
<a name="238" href="#238">238</a>     <strong class="jxr_keyword">return</strong> defaultLevel;
<a name="239" href="#239">239</a>   }
<a name="240" href="#240">240</a> 
<a name="241" href="#241">241</a>   
<a name="242" href="#242">242</a> 
<a name="243" href="#243">243</a>   <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">class</strong> <a href="../../../org/apache/log4j/StressCategory.html">CT</a> {
<a name="244" href="#244">244</a>     <strong class="jxr_keyword">public</strong> String   catstr;
<a name="245" href="#245">245</a>     <strong class="jxr_keyword">public</strong> Level level;
<a name="246" href="#246">246</a> 
<a name="247" href="#247">247</a>     <a href="../../../org/apache/log4j/StressCategory.html">CT</a>(String catstr,  Level level) {
<a name="248" href="#248">248</a>       <strong class="jxr_keyword">this</strong>.catstr = catstr;
<a name="249" href="#249">249</a>       <strong class="jxr_keyword">this</strong>.level = level;
<a name="250" href="#250">250</a>     }
<a name="251" href="#251">251</a>   }
<a name="252" href="#252">252</a> }
</pre>
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